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  1. Article

    Cyanidation tests and pretreatments to recover gold from a refractory ore in Colombia

    C. Vanegas, F. Muñoz in Minerals & Metallurgical Processing (2017)

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    Article

    Low voltage linear tunable transconductor for high speed filters

    A novel low voltage tunable linear transconductor is presented. The approach is based on quasi-floating gate transistors achieving higher transconductance and better dc common mode rejection than previous imp...

    T. Sánchez-Rodríguez, F. Muñoz, J. Galán… in Analog Integrated Circuits and Signal Proc… (2015)

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    Article

    Compact SC frequency tuning circuit for continuous-time Gm–C filters

    A novel automatic frequency tuning circuit for continuous-time filters is presented. Based on the switched-capacitor technique, the circuit offers an advantage in terms of simplicity resulting from the use of ...

    T. Sánchez-Rodríguez, F. Muñoz, J. Galán… in Analog Integrated Circuits and Signal Proc… (2013)

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    Article

    A linear compact tunable transconductor for Gm-C applications

    A CMOS highly linear voltage-controlled transconductor suitable for Gm-C filter design is presented. The control loop to program the transconductance maintains the input transistors in triode region with a com...

    M. Pedro, J. Galán, T. Sánchez-Rodríguez… in Analog Integrated Circuits and Signal Proc… (2012)

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    Article

    A new capacitor-ratio and offset independent residue amplifier

    Matching accuracy of capacitors at the first stage of the residue amplifier limits the overall resolution in pipelined analog-to-digital converters. A new residue amplifier is presented in this paper which is ...

    H. El Gmili, F. Muñoz, A. Torralba… in Analog Integrated Circuits and Signal Proc… (2011)

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    Chapter and Conference Paper

    Ontological Trading in a Multi-agent System

    In a more open world, the Web-based Information Systems (WIS) must be flexible and ready to be adaptable, extendable, accessible and operable by different people (or groups) who are in different places with diffe...

    J. Criado, N. Padilla, L. Iribarne… in Trends in Practical Applications of Agents… (2010)

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    Article

    1.1 V Low-Power ΣΔ Modulator for 14-bit, 16 KHz A/D Conversion Using a New Low-Voltage Class-AB Op-amp

    This paper presents the implementation of a second order Σ Δ modulator for a 1.1 V supply voltage. A new class-AB CMOS operational amplifier has been designed in order to achieve high-resolution under very-low...

    F. Muñoz, A. P. VegaLeal, R. G. Carvajal… in Analog Integrated Circuits and Signal Proc… (2005)

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    Article

    Low-Power Low-Voltage Class-AB Linear OTA for HF Filters with a Large Tuning Range

    This letter presents a new low-voltage class-AB differential linear OTA. The proposed transconductor uses a novel scheme based on two cross-coupled class-AB pseudo-differential pairs biased by a Flipped Voltag...

    J.A. Galán, R.G. Carvajal, F. Muñoz… in Analog Integrated Circuits and Signal Proc… (2003)

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    Article

    Low Voltage Class AB Output Stage for CMOS Op-Amps Using Multiple Input Floating Gate Transistors

    A new class AB output stage for CMOS op-amps is proposed with simple and accurate quiescent current control using floating gate transistors. The proposed stage can be operated with a supply voltage close to a ...

    R.G. Carvajal, A. Torralba, J. Tombs… in Analog Integrated Circuits and Signal Proc… (2003)

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    Article

    Class AB Output Stages for Low Voltage CMOS Opamps with Accurate Quiescent Current Control by Means of Dynamic Biasing

    Two new class AB output stages for CMOS op-amps are proposed with accurate quiescent current control. The second proposed stage also provides accurate control of the minimum current through the output transist...

    A. Torralba, R. G. Carvajal… in Analog Integrated Circuits and Signal Proc… (2003)